DENVER -- Two people were stabbed on a light rail train on Thursday night, the Denver Police Department said.

The incident happened on the L Line at 18th and California streets just before 6 p.m. The intersection is home to several large office and hotel towers.

Denver Police told FOX31 it appears the stabbings were random.

They told FOX31 Maressa Archuleta, a transient, was riding the train when for some unknown reason. She caused a disturbance and pulled out a knife.

Police said a man tried to distract her and a woman kicked Archuleta from behind and tried to knock her down. Both were stabbed in the scuffle.

“I’ve never been in a fight before. I got stabbed in my first fight," said one of the victims, Heavenly Cynt Sandoval.

Police arrested Archuleta a block away from the train on second-degree assault charges.

Violent attacks on the light rail are rare, according to RTD's Scott Reed.

"Riding aboard a transit vehicle is one of the safest things you can do anywhere," Reed told FOX31. "So any type of major incident is extremely rare, but it’s something we’re concerned about and we want to be sure that we maintain that level of security and keep it as high as we possibly can at all times. We’re looking into the extremely unusual circumstances surrounding the stabbing last evening with Denver police."

RTD contracts with about 350 security guards, plus has its own police force and employs off-duty undercover police officers from different cities.

RTD told FOX31 a guard was not on the train during the stabbing Thursday night.

When Sandoval was told the knife wound came close to her liver, she saw the good in the situation. “I think I’m very Blessed. Lucky to be alive," she said.

ALERT: #DPD is investigating a stabbing at 18th & California, on the light rail train. Two people, one male, one female, are being treated for serious injuries, but they appear to be non-life threatening. One female suspect is in custody. Remains active investigation. #Denverpic.twitter.com/03gAtUBmaW